luidox
May 29, 2020 16:32:44
Hey all. Can Height map data be displaced on an object much like noise vops displace without the need of UVs? I guess maybe a better question is would it work in a VDB sense?
luidox
May 29, 2020 21:24:59
bump
Island
May 29, 2020 22:09:21
You can add noise to the displacement of a shader and it will work without uv maps, but I'm pretty sure you can't add a image to the normal, bump, or displacement and expect it to work without a map.
luidox
May 30, 2020 01:03:15
Island
You can add noise to the displacement of a shader and it will work without uv maps, but I'm pretty sure you can't add a image to the normal, bump, or displacement and expect it to work without a map.
was affraid of that. so that means heightfields are UVd in order to project mmaps to displace DEM data?
tamte
May 30, 2020 02:27:35
You don't need uvs to sample texture
Any 0-1 values would do, in case you don't have anything better you can fit object or world space P from certain range to 0-1 and use that instead of uv
Siavash Tehrani
May 30, 2020 02:48:28
luidox
was affraid of that. so that means heightfields are UVd in order to project mmaps to displace DEM data?
Are you talking specifically about heightfields in Houdini? You can just load an image into a Heightfield File node, no UV prep necessary. Otherwise, arbitrary geometry would need coordinates, yes.
luidox
May 30, 2020 16:45:48
DaJuice
luidox
was affraid of that. so that means heightfields are UVd in order to project mmaps to displace DEM data?
Are you talking specifically about heightfields in Houdini? You can just load an image into a Heightfield File node, no UV prep necessary. Otherwise, arbitrary geometry would need coordinates, yes.
no def not using heightfields. im just trying to sculpt in geo using something like megascan height data or even substance maps but don't wanna worry about UVs at this stage. Labs just released a triplaner set up im looking at too.
tamte
You don't need uvs to sample texture
Any 0-1 values would do, in case you don't have anything better you can fit object or world space P from certain range to 0-1 and use that instead of uv
do you have a visual example by chance?